JPH04156786A - Monitoring camera system - Google Patents

Abstract

PURPOSE:To simplify the monitoring camera system by providing an angle screen synthesis part to generate a signal displaying the direction of a monitoring camera on a monitor screen and to be synthesized with the picture of the monitoring camera. CONSTITUTION:Picture signals V1 and V2 from monitoring cameras 1 and 2 and angle signals D1 and D2 from rotary driving parts 8 and 9 are inputted to angle screen synthesis parts 3 and 4. The synthesis parts 3 and 4 generate picture signals for angle display from the signals D1 and D2, and transmit synthesis picture signals G1 and G2 to a video switcher 51 while synthesizing the signals V1 and V2. A synthesis picture signal G3 selected by a switcher 5 is displayed on a monitor 6, and the picture where information on angle is synthesized to the picture of the monitoring camera is displayed on the monitor 6. In this case, the control part 7 transmits driving signals C1 and C2 controlling the direction, elevation, zoom, etc., of the cameras 1 and 2, and transmits a switching signal, S1 to switch the switcher 5. Thus, the large scale and the complication of the system can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a surveillance camera system, and particularly to a surveillance camera system that displays the orientation of a surveillance camera.

[Conventional technology]

As shown in FIG. 2, the conventional surveillance camera system includes a surveillance camera 1.2, a video switcher 5 that switches between the image signals Vl and V2 of the surveillance camera 1 and surveillance camera 2, and an output image signal from the video switcher 5. 3, a rotation drive section 8.9 that changes the direction (azimuth, elevation angle) of the surveillance camera 1.2 and outputs angle signals Di and D2 indicating the direction, and an angle signal D1 of the surveillance camera 1. An angle signal switching section 10 that switches and selects the angle signal D2 of the surveillance camera 2, an angle display section 12 that displays the angle signal D3 from the angle signal switching section 10, and an angle display section 12 that controls the orientation of the surveillance cameras 1 and 2 and provides video. It includes a control section 11 that controls switching of the switcher 5 and controls the angle signal switching section 10. Since the control unit 11 switches the video switcher 5 and the angle signal switching unit 10 in synchronization, the direction of the surveillance camera that is transmitting the image on the monitor is adjusted according to the direction of the angle display unit 1.
2.

Problems to be Solved by the Invention] This conventional surveillance camera system requires an angle signal switching unit and an angle display unit that selectively switch between a plurality of angle signals, and furthermore, the angle signal switching unit must be controlled. Therefore, there is a problem that the scale of the system becomes large and complicated.

An object of the present invention is to provide a surveillance camera system that can display angles without providing an angle signal switching section and an angle display section and that can simplify the system.

[Means to solve the problem]

The surveillance camera system of the present invention includes a plurality of surveillance cameras that output image signals, and a plurality of swing drive units that change the orientation of each surveillance camera according to a drive signal and output an angle signal indicating the orientation. , receives the image signal and the angle signal from each of the surveillance cameras and the corresponding rotation drive unit, generates a signal that displays the orientation of the surveillance camera as an image from the angle signal, and synthesizes it with the image signal. a plurality of angular screen composition sections that output composite image signals using a plurality of angle screen composition sections; an image switching section that selectively switches and outputs a plurality of composite image signals according to a switching signal; and a control that generates the drive signal and the switching signal. and a monitor that displays the composite image signal output from the image switching unit.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, and shows a case where two surveillance cameras are installed. Image signals Vl and V2 from surveillance cameras 1 and 2 and rotation drive unit 8,
The angle signals D1°D2 from 9 are sent to the angle screen synthesis unit 3.4.
is input. The angle screen synthesis unit 3.4 converts the angle signal DI
, D2 to generate an image signal for angle display, and the image signal Vl.

■ Combined with G1.2 and synthesized image signal G1. G2 is sent to the video switcher 51. The composite image signal G3 selected by the video switcher 5 is displayed on the monitor 6. The monitor 6 displays an image in which the angle information is combined with the surveillance camera image. The control unit 7 receives drive signals C1 and C for controlling the azimuth, elevation angle, zoom, etc. of the surveillance camera 1.2.
At the same time, a switching signal S1 for switching the video switcher 5 is sent out.

〔Effect of the invention〕

As explained above, the present invention provides an angle screen synthesis section to generate a signal for displaying the direction of the surveillance camera on the monitor screen, and synthesizes it with the image of the surveillance camera, thereby switching the angle signal that was conventionally necessary. An angle signal switching section and an angle signal display section are not required.

Furthermore, since the angle screen synthesis section can be placed on the surveillance camera side, there is an effect that cables for angle signals and their installation and connection work, which were conventionally necessary, are no longer required.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a conventional surveillance camera system. 1.2... Surveillance camera, 3.4... Angle screen composition unit, 5... Video switcher, 6... Monitor, 7...
・Control unit, 8, 9... Swing drive unit, Vl, V2...
- Image signals of surveillance cameras, Gl, G2. G3... Composite image signal, CI, C2... Drive signal, Di, D2...
- Angle signal, Sl... switching signal.

Claims (1)

[Claims] A plurality of surveillance cameras that output image signals, a plurality of rotation drive units that change the direction of each surveillance camera according to a drive signal and output an angle signal indicating the orientation, and each of the surveillance cameras and the a plurality of units that receive the image signal and the angle signal from the corresponding swing drive unit, generate a signal for displaying the orientation of the surveillance camera as an image from the angle signal, and combine the signal with the image signal to output a composite image signal; an angular screen synthesis section; an image switching section that selectively switches and outputs the plurality of synthesized image signals according to a switching signal; a control section that generates the driving signal and the switching signal; and an image switching section. A surveillance camera system comprising: a monitor that displays the output composite image signal.